<template>
  <view class="cart-container" v-if="cart.length!==0">
    <!-- 收货地址组件 -->
    <my-address></my-address>
    
    <view class="cart-title">
      <!-- 左侧图标 -->
      <uni-icons type="shop" size="18"></uni-icons>
      <!-- 文本 -->
      <text class="cart-title-text">购物车</text>
    </view>

    <!-- 商品列表区域,实现滑动删除效果 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
        <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
          <my-goods :goods="goods" :show-radio="true" :showNumber="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    
    <!-- 结算组件 -->
    <my-settle></my-settle>
  </view>
  
  <view class="empty-cart" v-else>
    <image src="/static/tab_icons/cart-active.png" class="empty-img"></image>
    <text class="tip-text">空空如也~~~</text>
  </view>
</template>

<script>
  import {
    mapGetters,
    mapState,
    mapMutations
  } from 'vuex'
  //导入自己封装的mixins模块
  // import badgeMix from '@/mixins/tabbar-badge.js'
  export default {
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    onShow() {
      uni.removeTabBarBadge({
        index:2
      })
    },
    // 将 badgeMix 混入到当前的页面中进行使用
    // mixins: [badgeMix],
    data() {
      return {
        options: [{
          text: '删除', // 显示的文本内容
          style: {
            backgroundColor: '#C00000' // 按钮的背景颜色
          }
        }]
      };
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount','removeGoodsById']),
      //勾选状态发生改变
      radioChangeHandler(e) {
        // console.log(e)
        this.updateGoodsState(e)
      },

      //数量改变
      numberChangeHandler(e) {
        // console.log(e)
        this.updateGoodsCount(e)
      },
      
      //删除
      swipeActionClickHandler(goods){
        this.removeGoodsById(goods)
      }
    }
  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
  .cart-title {
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    border-bottom: 1px solid #efefef;

    .cart-title-text {
      margin-left: 10px;
    }
  }
  .empty-cart{
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
    
    .empty-img{
      width: 90px;
      height: 90px;
    }
    
    .tip-text{
      font-size: 12px;
      color:gray;
      margin-top: 15px;
    }
  }
</style>
